Causes and Risk Factors
Hair loss can stem from various factors:
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Family history (heredity)
The most common cause of hair loss is a hereditary condition called male-pattern baldness. It typically occurs gradually with aging and in predictable patterns.
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Stressful events
Many people experience temporary hair thinning several months after a physical or emotional shock. Examples include significant weight loss, surgery, illness, or periods of intense stress.
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Hairstyles and treatments
Hairstyles that pull hair tight, such as pigtails or cornrows, can cause traction alopecia. Harsh treatments like hot oil applications or chemical perms can cause inflammation of hair follicles that leads to hair loss. If scarring occurs, hair loss could be permanent.
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Ageing
With age, hair growth slows. Hair follicles stop producing new hairs, and existing hairs become finer.